Viscous Flowfields Induced by Two- and Three-Dimensional Lift Jets in Ground Effect.

Abstract

An important consideration for VTOL aircraft design is the aerodynamic interaction between airframe undersurfaces and the ground. In an effort to predict this phenomenon, a second-order-accurate, finite-difference scheme for solution of the two- and three-dimensional conservation equations of fluid mechanics, in combination with a turbulence model, is described. The solution technique is applied to a planar lift jet in ground effect for both incompressible and compressible flow and to two interacting incompressible jets with fountain formation. Fluid properties that characterize the jet impingement flowfields are given for a range of Reynolds numbers, and comparisons with measured data are presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1979
Accession Number
ADA078782

Entities

People

  • D. R. Kotansky
  • G. R. Peters
  • R. K. Agarwal
  • W. W. Bower

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Compressible Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Equations
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Ground Effect
  • Length
  • Mechanical Properties
  • Mechanics
  • Pressure Distribution
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.